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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
11.9k
Companies
569
Updated
10.02.2026
11.9k Questions 569 Companies10.02.2026

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>Build a 30-day plan from PracHub's Meta SWE questions.

Two weeks of coding, then system design, then mock rounds. Start day 1?

PLTCHK testimonial
PLTCHK

"I got asked a hardcore MCM DP question and I saw it on PracHub as well. Solved that question in 5 minutes. Without PracHub I doubt I could solve it in 5 hours. Though somehow didn't get hired, perhaps I guess I solved it too fast? /s"

_The_TaNk_ testimonial
_The_TaNk_

"Believe me i'm a student here jn US. Recently interviewed for MSFT. They asked me exact question from PracHub. I saw it the night before and ignored it cause why waste time on random sites. I legit wanna go back and redo this whole thing if I had chance. Not saying will work for everyone but there is certainly some merit to that website. And i'm gonna use it in future prep from now on like lc tagged"

Chris testimonial
ChrisSenior SWE, LinkedIn

"10 years of experience but never worked at a top company. PracHub's senior-level questions helped me break into FAANG at 35. Age is just a number."

sleepy33 testimonial
sleepy33

"I was skeptical about the 'real questions' claim, so I put it to the test. I searched for the exact question I got grilled on at my last Meta onsite... and it was right there. Word for word."

Jake testimonial
JakeSenior ML Engineer, Lyft

"Got a Google recruiter call on Monday, interview on Friday. Crammed PracHub for 4 days. Passed every round. This platform is a miracle worker."

nuggetlord testimonial
nuggetlord

"I've used LC, Glassdoor, and random Discords. Nothing comes close to the accuracy here. The questions are actually current — that's what got me. Felt like I had a cheat sheet during the interview."

Carlos testimonial
CarlosFull Stack, Shopify

"The solution quality is insane. It covers approach, edge cases, time complexity, follow-ups. Nothing else comes close."

boba.tea.vibes testimonial
boba.tea.vibes

"Legit the only resource you need. TC went from 180k -> 350k. Just memorize the top 50 for your target company and you're golden."

Andy testimonial
AndySWE-II, Google

"PracHub Premium for one month cost me the price of two coffees a week. It landed me a $280K+ starting offer."

couchpotato99 testimonial
couchpotato99

"Literally just signed a $600k offer. I only had 2 weeks to prep, so I focused entirely on the company-tagged lists here. If you're targeting L5+, don't overthink it."

Shruti testimonial
ShrutiData Engineer, Salesforce

"Coaches and bootcamp prep courses cost around $200-300 but PracHub Premium is actually less than a Netflix subscription. And it landed me a $178K offer."

midnightramen testimonial
midnightramen

"I honestly don't know how you guys gather so many real interview questions. It's almost scary. I walked into my Amazon loop and recognized 3 out of 4 problems from your database."

Bianca testimonial
BiancaFrontend Eng, Figma

"Discovered PracHub 10 days before my interview. By day 5, I stopped being nervous. By interview day, I was actually excited to show what I knew."

tambrahm007 testimonial
tambrahm007

"I recently cleared Uber interviews (strong hire in the design round) and all the questions were present in prachub."

toa testimonial
toa

"The search is what sold me. I typed in a really niche DP problem I got asked last year and it actually came up, full breakdown and everything. These guys are clearly updating it constantly."

PLTCHK testimonial
PLTCHK

"I got asked a hardcore MCM DP question and I saw it on PracHub as well. Solved that question in 5 minutes. Without PracHub I doubt I could solve it in 5 hours. Though somehow didn't get hired, perhaps I guess I solved it too fast? /s"

_The_TaNk_ testimonial
_The_TaNk_

"Believe me i'm a student here jn US. Recently interviewed for MSFT. They asked me exact question from PracHub. I saw it the night before and ignored it cause why waste time on random sites. I legit wanna go back and redo this whole thing if I had chance. Not saying will work for everyone but there is certainly some merit to that website. And i'm gonna use it in future prep from now on like lc tagged"

Chris testimonial
ChrisSenior SWE, LinkedIn

"10 years of experience but never worked at a top company. PracHub's senior-level questions helped me break into FAANG at 35. Age is just a number."

sleepy33 testimonial
sleepy33

"I was skeptical about the 'real questions' claim, so I put it to the test. I searched for the exact question I got grilled on at my last Meta onsite... and it was right there. Word for word."

Jake testimonial
JakeSenior ML Engineer, Lyft

"Got a Google recruiter call on Monday, interview on Friday. Crammed PracHub for 4 days. Passed every round. This platform is a miracle worker."

nuggetlord testimonial
nuggetlord

"I've used LC, Glassdoor, and random Discords. Nothing comes close to the accuracy here. The questions are actually current — that's what got me. Felt like I had a cheat sheet during the interview."

Carlos testimonial
CarlosFull Stack, Shopify

"The solution quality is insane. It covers approach, edge cases, time complexity, follow-ups. Nothing else comes close."

boba.tea.vibes testimonial
boba.tea.vibes

"Legit the only resource you need. TC went from 180k -> 350k. Just memorize the top 50 for your target company and you're golden."

Andy testimonial
AndySWE-II, Google

"PracHub Premium for one month cost me the price of two coffees a week. It landed me a $280K+ starting offer."

couchpotato99 testimonial
couchpotato99

"Literally just signed a $600k offer. I only had 2 weeks to prep, so I focused entirely on the company-tagged lists here. If you're targeting L5+, don't overthink it."

Shruti testimonial
ShrutiData Engineer, Salesforce

"Coaches and bootcamp prep courses cost around $200-300 but PracHub Premium is actually less than a Netflix subscription. And it landed me a $178K offer."

midnightramen testimonial
midnightramen

"I honestly don't know how you guys gather so many real interview questions. It's almost scary. I walked into my Amazon loop and recognized 3 out of 4 problems from your database."

Bianca testimonial
BiancaFrontend Eng, Figma

"Discovered PracHub 10 days before my interview. By day 5, I stopped being nervous. By interview day, I was actually excited to show what I knew."

tambrahm007 testimonial
tambrahm007

"I recently cleared Uber interviews (strong hire in the design round) and all the questions were present in prachub."

toa testimonial
toa

"The search is what sold me. I typed in a really niche DP problem I got asked last year and it actually came up, full breakdown and everything. These guys are clearly updating it constantly."

Showing 20 results
Anthropic logo
Anthropic
Medium
Software Engineer

Make a Hostname-Limited Crawler Concurrent

A crawler receives a startUrl and an htmlParser dependency that discovers linked URLs. It should crawl only URLs reachable from the start under the sa...

Software Engineering FundamentalsConcurrencyGraphs
6
0
72 people solved
Sep 3, 2026
Jane Street logo
Jane Street
Medium
Machine Learning Engineer

Code Editor with Block Shrink and Expand (Code Folding)

Implement the core of a code editor (similar to VS Code) that supports code folding: collapsing ("shrink") and restoring ("expand") indentation-based ...

Coding & AlgorithmsData Structure Design
92
0
918 people solved
Apr 24, 2026
Airbnb logo
Airbnb
Hard
Software Engineer Locked

Design a Stateful Working Hours Register

Design a stateful employee working-hours register that handles badge events, completed time, position rankings, delayed promotions, historical pay, an...

Software Engineering FundamentalsLow-Level Design (OOP)Simulation & State Machines
40
0
306 people solved
Jul 20, 2026
Oracle logo
Oracle
Easy
Software Engineer

Replace a Range of Nodes in a Linked List with Another Linked List

You are given two singly linked lists, list1 and list2, and two indices i and j. Replace the nodes of list1 numbered i through j (inclusive) with the ...

Coding & AlgorithmsLinked Lists
1
0
15 people solved
Sep 25, 2026
OpenAI logo
OpenAI
Hard
Software Engineer

Design a Chat Assistant Inference Service: Streaming, Free-Tier Limits, GPU Scheduling

Design the serving system behind a ChatGPT-style chat assistant: users send messages in a conversation, and a large language model running on GPUs gen...

System DesignRate LimitingLLM Inference & Serving
2
0
21 people solved
Sep 20, 2026
OpenAI logo
OpenAI
Hard
Software EngineerSenior+ Locked

Design a User-Respecting Smart-Grid Controller

Design a resilient smart-grid controller that manages overload while honoring owner consent, critical loads, intermittent devices, and fairness.

System Design
18
0
205 people solved
Aug 21, 2026
Amazon logo
Amazon
Easy
Software Engineer Locked

Evaluate an AI-Assisted Engineering Workflow

Evaluate a concrete AI-assisted engineering workflow by describing delegated work, protected context, verification, and evidence that the approach imp...

Software Engineering FundamentalsTesting & Quality
25
1
473 people solved
Aug 19, 2026
Mercor logo
Mercor
Medium
Software Engineer

Reason About Coffee-Quality Comparison Probabilities

Two coffee shops, A and B, have the same distribution of coffee quality. Four purchased cups are labeled A1, A2, B1, and B2. What is the probability t...

Statistics & MathProbabilityPuzzles & Brainteasers
12
0
83 people solved
Sep 3, 2026
ByteDance logo
ByteDance
Medium
Data Scientist

Discuss Your Data Analytics and Causal-Inference Experience

Discuss Your Data Analytics and Causal-Inference Experience In a screening conversation for a data science role in integrity and safety, you are asked...

Behavioral & LeadershipProject Deep DiveCausal Inference
1
0
15 people solved
Sep 23, 2026
Waymo logo
Waymo
Medium
Data Scientist

SQL: Monthly Ride Totals and Average Ratings, Newest Month First

A ride service stores one row per ride. For every calendar month that has at least one ride, report the total number of rides and the average ride rat...

Data Manipulation (SQL/Python)SQL
4
0
32 people solved
Sep 10, 2026
DoorDash logo
DoorDash
Medium
Software Engineer

Build a Live API-Connected DAG Workflow for Late-Order Refund Requests

Design a working local demonstration of an order-status and support-decision workflow. Separate components must communicate through real API calls, an...

Software Engineering Fundamentals
2
0
42 people solved
Sep 5, 2026
Waymo logo
Waymo
Medium
Frontend EngineerSenior+

Build an Autocomplete Search Bar With a Hand-Written Debounce

Build an autocomplete search bar. As the user types, the component shows a list of suggestions for the current text, fetched from a suggestion service...

Software Engineering FundamentalsUI Components & AccessibilityJavaScript & TypeScript
3
0
30 people solved
Sep 10, 2026
Palantir logo
Palantir
Medium
Software EngineerIntern

Stack Item and Category Coupons with an Eighty-Percent Cap

Extend a cart-discount calculation to combine item-specific and category-wide coupons. Discounts stack multiplicatively, and the unrounded total disco...

Coding & AlgorithmsMath & Number Theory
6
0
52 people solved
Aug 27, 2026
Glean logo
Glean
Medium
Machine Learning Engineer

Design a Work-Together Distance Between Any Two Employees of a Company

Design a "people distance" d(u1, u2) between any two users in a company that quantifies how much the two of them work together. A smaller distance sho...

ML System Design
0
0
13 people solved
Sep 30, 2026
xAI logo
xAI
Medium
Frontend Engineer

Design a Collaborative Document Editor

Design a collaborative document editor where several users can edit the same document and see each other's changes. Constraints & Assumptions The sour...

System DesignState ManagementConsistency & Availability
4
0
32 people solved
Sep 15, 2026
Uber logo
Uber
Hard
Software Engineer

Design the Data Flow Behind a Food Delivery App's Restaurant List

Design the data flow behind the restaurant list in a food delivery app such as Uber Eats. When a customer opens the app with a delivery address, the h...

System DesignGeo & Delivery Systems
0
0
8 people solved
Sep 29, 2026
LinkedIn logo
LinkedIn
Hard
Machine Learning Engineer

Implement a Text-Embedding Recommender Training Pipeline

Implement a Text-Embedding Recommender Training Pipeline You are given three sources of local data: - Member profiles with a member ID, headline, titl...

Machine Learning
13
2
95 people solved
Sep 4, 2026
Nuro logo
Nuro
Hard
Software Engineer

Search Large Vehicle Records with Bounded Memory

Design an internal search tool over petabytes of vehicle data retained for one year. Users issue range queries over selected data attributes and can l...

System DesignIndexing & Query PerformanceStorage & Sharding
5
0
57 people solved
Aug 31, 2026
Stripe logo
Stripe
Hard
Software EngineerSenior+

Build a Transaction Rule Engine with AND/OR Chains and Nested Parentheses

Build a rule engine that decides whether each payment transaction is accepted or denied. - Transactions: a list of records, each a set of named attrib...

Software Engineering FundamentalsParsing & Interpreters
2
0
39 people solved
Aug 30, 2026
Roblox logo
Roblox
Medium
Software Engineer

Build an Auto-Rotating Traffic Light in Vanilla JavaScript Without a Framework

Build a traffic light in the browser using only plain HTML, CSS and JavaScript, with no framework or library. The light has three lamps, red, yellow a...

Software Engineering FundamentalsSimulation & State MachinesJavaScript & TypeScript
0
0
9 people solved
Oct 1, 2026
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